The Penn State Methodology Center was continuously funded through National Institute on Drug Abuse Center of Excellence awards from 1996-2021. These grants, P50 DA039838 and P50 DA010075, served as the cornerstone of Methodology Center funding and enabled The Methodology Center to become an internationally recognized leader in the development and dissemination of methods for experimental design and data analysis in the social, health, and behavioral sciences. For a list of publications funded under these awards please see the links below.
LCA & LTA Book
We host a variety of helpful, supplemental information for the book, Latent class and latent transition analysis: With applications in the social, behavioral, and health sciences. This information may be particularly helpful as you begin to apply latent class and latent transition analysis (LCA and LTA) in your research.
Collins, L. M., & Lanza, S. T. (2009). Latent class and latent transition analysis: With applications in the social, behavioral, and health sciences. Hoboken, NJ: Wiley.
Occasionally, Drs. Bethany Bray, John Dziak, and Stephanie Lanza and their colleagues issue technical reports about certain aspects of the research they are conducting with latent class models. Many of these reports contain technical details that are beyond what appears in the published versions due to space limitations. In addition, many of these reports represent historical work that was conducted in the Penn State Methodology Center.
Penn State Methodology Center Annual Reports
The Methodology Center’s annual reports from 2011-20 are available as PDFs. The reports provide context for our work and an overview of our research. They include summaries of our latent class and latent transition analysis projects and a review of our productivity during the last year.
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